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Analog Devices Inc. LT1782IS6#TRPBF
- Part No.:
- LT1782IS6#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT1782IS6#TRPBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,177
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Product details
Overview
LT1782IS6#TRPBF from Analog Devices (acquired Linear Technology) is a micropower, rail-to-rail input/output operational amplifier in 6-lead TSOT-23 package with Over-The-Top™ operation, 200kHz gain bandwidth, 55µA quiescent current, and integrated shutdown pin. It operates from 2.7V to 18V total supply, supports inputs up to 18V above V– or above V+, and delivers ±18mA output drive - ideal for battery-powered sensor conditioning and supply current sensing.
For engineers reviewing the LT1782IS6#TRPBF datasheet, LT1782IS6#TRPBF pinout, LT1782IS6#TRPBF application, or LT1782IS6#TRPBF equivalent, key selection criteria include its unique Over-The-Top input capability, shutdown-enabled ultra-low power mode (5µA), guaranteed –40°C to +85°C operation, rail-to-rail swing under load, and reverse battery protection to 18V.
Technical Context
The LT1782IS6#TRPBF integrates dual-input-stage architecture (NPN and PNP) enabling Over-The-Top operation: inputs function correctly even when ≥0.3V above V+, with phase reversal protection for inputs down to 9V below V–. Its internal compensation drives ≥600pF capacitive loads stably.
Shutdown control is implemented via dedicated SHDN pin (Pin 5), requiring ≥2V above V– to disable; during shutdown, output enters high-impedance state and supply current drops to ≤15µA (typ. 5µA). Input common-mode range spans 0V to 18V on single supply and –5V to +13V on split supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 200kHz - enables stable closed-loop operation up to ~100kHz at unity gain with adequate phase margin. |
| Supply Current (Active) | 55µA max - supports multi-year battery life in always-on portable instrumentation. |
| Supply Current (Shutdown) | 5µA typical - reduces system standby power by >90% while preserving high-Z output. |
| Input Voltage Range | 0V to 18V on single supply - allows direct sensing of voltages near or above V+ without level-shifting. |
| Output Drive Capability | ±18mA min - sustains rail-to-rail swing into 200Ω loads, suitable for driving ADC references or 4–20mA transmitters. |
| Input Offset Voltage | 800µV max (–40°C to +85°C) - ensures <1mV error in precision DC-coupled signal chains. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive under-hood environments. |
Pinout & Package
LT1782IS6#TRPBF is housed in a 6-lead ThinSOT™ (TSOT-23) package, 1.00mm max height, JEDEC MO-193 compliant, with exposed pad not connected internally. Pin 1 marked by beveled corner; pin numbering follows standard TSOT-23 counterclockwise layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Capable of rail-to-rail sourcing/sinking up to ±18mA; high-Z during shutdown. |
| 2 (V–) | Negative supply rail | Reference for all internal circuitry; reverse battery protection active up to –18V. |
| 3 (+IN) | Non-inverting input | Supports Over-The-Top operation: functions up to 18V above V–, independent of V+. |
| 4 (V+) | Positive supply rail | Bypass with 0.1µF capacitor within 25mm; supports 2.7V–18V total supply range. |
| 5 (SHDN) | Shutdown control input | Logic-high ≥2V above V– disables amplifier; leakage <1µA ensures minimal loading. |
| 6 (–IN) | Inverting input | Differential input voltage rated to ±18V; includes internal 6kΩ series resistors for overvoltage protection. |
Key Features
| Feature | Design Value |
|---|---|
| Over-The-Top™ input operation | Enables direct sensing of signals exceeding V+, eliminating external level-shifters in high-side current monitoring. |
| Rail-to-rail input and output | Maintains full dynamic range across entire supply range (e.g., 0–5V out on 5V supply), maximizing ADC utilization. |
| Reverse battery protection | Draws <1nA at –18V supply - prevents damage and battery drain in automotive/portable systems with accidental polarity reversal. |
| Phase reversal protection | Prevents false output inversion when inputs dip to –9V relative to V–, critical for fault-tolerant sensor interfaces. |
| Shutdown with high-Z output | Reduces system power by >90% while isolating downstream circuitry - essential for multiplexed sensor front-ends. |
Applications
| Battery Monitoring | Supply Current Sensing |
|---|---|
|
Use Scenario: Real-time monitoring of Li-ion cell voltage during charge/discharge cycles in portable medical devices. IC Role / Device Role / Timing Role: Precision buffer and level translator for ADC input, handling 0–4.3V range with Over-The-Top capability to avoid clipping near full charge. Use Value: Eliminates need for external resistor dividers or charge pumps, reducing BOM count and improving measurement accuracy at battery extremes. |
Use Scenario: High-side current sensing in solar charge controllers using shunt resistor between PV panel and buck converter input. IC Role / Device Role / Timing Role: Differential amplifier with inputs referenced to 18V bus, rejecting common-mode noise while amplifying mV-level shunt voltage. Use Value: Direct interface to 18V+ rails without level-shifting ICs; 18mA drive supports driving long traces to isolated ADCs. |
| Sensor Conditioning | 4–20mA Transmitter |
|
Use Scenario: Amplifying low-level outputs from thermocouples or strain gauges in industrial IoT nodes powered by coin cells. IC Role / Device Role / Timing Role: Micropower instrumentation amplifier front-end stage, providing gain and rail-to-rail buffering before sigma-delta ADC. Use Value: 55µA quiescent current extends battery life beyond 5 years; input offset drift <5µV/°C maintains calibration stability. |
Use Scenario: Loop-powered 4–20mA transmitter for pressure sensors in hazardous area process control systems. IC Role / Device Role / Timing Role: Output stage amplifier driving 250Ω load with precise current regulation, leveraging rail-to-rail swing and high output current. Use Value: Sustains full 20mA into 250Ω at 12V loop supply - meets HART-compliant voltage compliance requirements without external boost stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1783CS6#TRPBF | Higher GBW (1.25MHz), higher supply current (210µA), same Over-The-Top and shutdown features. | Better suited for AC-coupled signal paths >100kHz; less optimal for multi-year battery life. | Select when bandwidth >200kHz is required and power budget allows >3× higher quiescent current. |
| AD8603ARJZ-R7 | No Over-The-Top capability; rail-to-rail I/O; 50µA supply current; 400kHz GBW; no shutdown pin. | Lacks high-side sensing ability and power-gating; requires external enable logic for low-power modes. | Choose for cost-sensitive, non-Over-The-Top applications where 400kHz bandwidth suffices and shutdown is managed externally. |
Compared with LT1783CS6#TRPBF and AD8603ARJZ-R7, the LT1782IS6#TRPBF uniquely balances ultra-low power, Over-The-Top operation, and integrated shutdown - making it irreplaceable in battery-powered high-side sensing where both voltage headroom and energy efficiency are constrained.
Availability
LT1782IS6#TRPBF is available at Aetrix Electronics and suitable for battery monitoring, sensor conditioning, supply current sensing, and 4–20mA transmitter designs requiring stable component supply across industrial temperature ranges and long product lifecycles.
Supply support for LT1782IS6#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through acquisition of Linear Technology in 2017.
The LT1782IS6#TRPBF belongs to Linear Technology's legacy micropower op amp family, designed specifically for energy-constrained, high-voltage-sensing applications in portable and industrial systems where input overvoltage resilience and rail-to-rail fidelity are mandatory.
FAQ
What is the maximum input voltage the LT1782IS6#TRPBF can tolerate relative to V+?
The LT1782IS6#TRPBF supports Over-The-Top™ operation: either or both inputs can exceed V+ by up to 18V above V–, independent of V+. This means with V+ = 5V and V– = 0V, inputs may reach +18V - enabling direct high-side current sensing without attenuators. The absolute maximum differential input voltage remains ±18V.
Does the LT1782IS6#TRPBF require external components for stability with capacitive loads?
The LT1782IS6#TRPBF is internally compensated to drive ≥600pF capacitively without oscillation. For loads >600pF (e.g., long cables or ADC input filters), a 0.22µF capacitor in series with a 150Ω resistor from OUT to GND restores stability up to 10,000pF - no additional external compensation is needed for standard PCB layouts.
How does the shutdown feature affect output impedance and leakage in the LT1782IS6#TRPBF?
When the SHDN pin is pulled ≥2V above V–, the LT1782IS6#TRPBF disables its output stage, placing the OUT pin in high-impedance state with leakage current <1µA over –40°C to +85°C. This isolation prevents back-driving of downstream circuitry and eliminates loading during sleep modes - critical for multiplexed sensor arrays.
Can the LT1782IS6#TRPBF operate from a 3.3V single supply while maintaining rail-to-rail output swing?
Yes. The LT1782IS6#TRPBF is fully specified at 3V total supply (V+ = 3.3V, V– = 0.3V or ground). It delivers rail-to-rail output swing: VOH ≥2.91V (at no load) and VOL ≤8mV (at 5mA sink), ensuring >99% of the 3.3V range is usable for precision DC measurements without clipping.
What protection features does the LT1782IS6#TRPBF include for harsh electrical environments?
The LT1782IS6#TRPBF integrates reverse battery protection (survives –18V supply), input overvoltage tolerance (±18V differential, +24V/–10V pin-to-V–), phase reversal immunity (inputs down to –9V relative to V–), and internal 6kΩ series resistors on both inputs. These features eliminate need for external TVS diodes or series resistors in automotive and industrial deployments.
LT1782IS6#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- Over-The-Top®
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.075V/µs
- Gain Bandwidth Product:
- 225 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 8 nA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 45µA
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 18 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LT1782IS6#TRPBF FAQ
1.How can I place an order for LT1782IS6#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1782IS6#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LT1782IS6#TRPBF reliable?
The price and inventory of LT1782IS6#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1782IS6#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1782IS6#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1782IS6#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1782IS6#TRPBF?
LT1782IS6#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1782IS6#TRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LT1782IS6#TRPBF?
For technical support, including LT1782IS6#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1782IS6#TRPBF requirements.
6.How does Aetrix verify that LT1782IS6#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1782IS6#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LT1782IS6#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1782IS6#TRPBF?
All LT1782IS6#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1782IS6#TRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LT1782IS6#TRPBF part is unused and in its original packaging.
Return procedure for LT1782IS6#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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